Results 31 to 40 of about 35,646 (266)
Synthesis of stereodefined 1-aryl(heteroaryl) substituted 1,2-bis(2-bromopyridin-3-yl)ethenes by selective tandem Suzuki-Miyaura Cross-coupling reactions [PDF]
, 2008 In this communication we show the preparation of stereodefined trisubstituted alkenes 2 can be achieved by sequential selective Suzuki-Miyaura reactions of 2-bromo-3-(2,2-dibromovinyl)pyridines.
Baldino, Salvatore +1 more
core +1 more source
Structures and Energetic Properties of Two New Salts Comprising the 5,5'-Azotetrazolate Dianion
Crystals, 2015 Two new potentially energetic salts comprising the 5,5'-azotetrazolate dianion have been prepared and structurally characterized. The new azotetrazolates are tetraphenylphosphonium-5,5'-azotetrazolate (1) and 1H-1,2,4-triazole-1-carboxamidine-5,5 ...
Raik Deblitz +2 more
doaj +1 more source
Crystalline structure and thermotropic behavior of alkyltrimethylphosphonium amphiphiles [PDF]
, 2017 Quaternary organophosphonium salts bearing long alkyl chains are cationic surfactants of interest owing to their physical and biological properties.
Gamarra Montes, Ana +3 more
core +2 more sources
Angewandte Chemie, EarlyView.Coordination of a Lewis base switches an electron‐accepting tricoordinate boron center into an electron‐donating tetracoordinate one. An alkenyl‐strapped diphenylthienylboryl π‐system undergoes phosphine‐induced reversible π‐umpolung, where transformation from an acceptor–acceptor–acceptor framework to a donor–acceptor–donor system gives rise to ...
Satoru Kitamura +2 more
wiley +2 more sources
Angewandte Chemie, EarlyView.A complexity‐generating intramolecular alkene diamination constitutes the pivotal step in the enantioselective synthesis of the title natural products featuring a strained, cage‐like pentacyclic architecture. Abstract Among more than four thousand monoterpene indole alkaloids (MIAs) isolated to date, only a few feature a 2,2,3‐trisubstituted indoline ...
Vincent Goëlo, Qian Wang, Jieping Zhu
wiley +2 more sources
On the Chemical Stabilities of Ionic Liquids
Molecules, 2009 Ionic liquids are novel solvents of interest as greener alternatives to conventional organic solvents aimed at facilitating sustainable chemistry. As a consequence of their unusual physical properties, reusability, and eco-friendly nature, ionic liquids ...
Yen-Ho Chu +3 more
doaj +1 more source
Molecules, 2021 It has been shown for a wide range of epoxy compounds that their interaction with triphenylphosphonium triflate occurs with a high chemoselectivity and leads to the formation of (2-hydroxypropyl)triphenylphosphonium triflates 3 substituted in the 3 ...
Vladimir F. Mironov +11 more
doaj +1 more source
Theoretical studies of 31P NMR spectral properties of phosphanes and related compounds in solution [PDF]
, 2010 Selected theoretical methods, basis sets and solvation models have been tested in their ability to predict 31P NMR chemical shifts of large phosphorous-containing molecular systems in solution.
Al-Farhan +91 more
core +1 more source
EcoMat, 2022 We modified perovskite/Spiro‐OMeTAD interface by using two novel phosphonium salts containing PF6− counter anion (i.e., ClTPPPF6 and BrTPPPF6). The cation and anion in phosphonium salts possess not only ionic bonds but also coordination bonds with ...
Dongmei He +11 more
doaj +1 more source
Photo- and solvatochromic properties of nitrobenzospiropyran in ionic liquids containing the [NTf2]- anion [PDF]
, 2008 The photo-, thermo- and solvatochromic properties of 2,3-dihydro-10,30,30-trimethyl-6-nitrospiro- [1-benzopyran-2,20-1H-indole] (BSP-NO2) were studied in ILs containing the anion [NTf2]- by UV-Vis absorption spectroscopy, ab initio molecular orbital ...
Byrne, Robert +5 more
core +1 more source